Sewage filtering device

Abstract

The invention discloses a sewage filtering device, which comprises a frame body, wherein the periphery of the frame body is sealed and watertight, openings are arranged at the upper end and the lower end of the frame body, a grille and a water inlet are arranged at the lower end of the frame body, a filter element cover plate and a water outlet are arranged at the upper end of the frame body, a fixed frame is arranged in the middle position of the frame body, at least three layers of filtering brush sets are vertically distributed in the fixed frame, each filtering brush set comprises a plurality of filtering brushes which are closely arranged side by side, each filtering brush comprises a center rod and a plurality of filtering units arranged on the center rod, and each filtering unit isformed by radially uniformly distributing a plurality of elastic filaments around the center rod. The sewage filtering device has the advantages that sewage enters into the water inlet from the lowerend of the frame body, the sewage firstly passes through the grille for intercepting granular substances with a larger diameter and then flows upwards for passing through the filtering brushes which are closely distributed, the elastic filaments which are closely arranged are used for coalescence of a large number of suspended substances and an oil-grease mixture in the sewage, and the sewage after filtering treatment is finally discharged from the water outlet.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a sewage filtering device. Background technique [0002] The sewage discharge of the catering industry is characterized by an average COD concentration of 5,000 to 30,000 mg / L, containing high concentrations of animal and vegetable oils and some solid residues. However, the sewage discharge of most restaurants does not meet the standards stipulated by the state. Even in the restaurants in the areas where the urban centralized sewage treatment plants are managed, because the wastewater is not pretreated, the COD concentration far exceeds the standards stipulated by the state. , and often encountered downpipe blockage, sewage pollution is serious. Practice has shown that the COD concentration can be greatly reduced by treating catering sewage to remove animals, plants and solid residues. The existing filtering device has disadvantages such as complex structure, unsatisfactory deconta...

AI Technical Summary

Problems solved by technology

Existing filter devices have disadvantages such as complex structure and unsatisfactory decontamination and degreasing effect

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